invidious/assets/js/themes.js
2025-04-30 20:41:51 -04:00

47 lines
1.5 KiB
JavaScript

"use strict";
var toggle_theme = document.getElementById("toggle_theme");
const STORAGE_KEY_THEME = "dark_mode";
const THEME_DARK = "dark";
const THEME_LIGHT = "light";
// TODO: theme state controlled by system
toggle_theme.addEventListener("click", function (e) {
e.preventDefault();
const isDarkTheme = helpers.storage.get(STORAGE_KEY_THEME) === THEME_DARK;
const newTheme = isDarkTheme ? THEME_LIGHT : THEME_DARK;
setTheme(newTheme);
helpers.storage.set(STORAGE_KEY_THEME, newTheme);
helpers.xhr("GET", "/toggle_theme?redirect=false", {}, {});
});
/** @param {THEME_DARK|THEME_LIGHT} theme */
function setTheme(theme) {
// By default body element has .no-theme class that uses OS theme via CSS @media rules
// It rewrites using hard className below
if (theme === THEME_DARK) {
toggle_theme.children[0].className = "icon ion-ios-sunny";
document.body.className = "dark-theme";
} else if (theme === THEME_LIGHT) {
toggle_theme.children[0].className = "icon ion-ios-moon";
document.body.className = "light-theme";
} else {
document.body.className = "no-theme";
}
}
// Handles theme change event caused by other tab
addEventListener("storage", function (e) {
if (e.key === STORAGE_KEY_THEME)
setTheme(helpers.storage.get(STORAGE_KEY_THEME));
});
// Set theme from preferences on page load
addEventListener("DOMContentLoaded", function () {
const prefTheme = document.getElementById("dark_mode_pref").textContent;
if (prefTheme) {
setTheme(prefTheme);
helpers.storage.set(STORAGE_KEY_THEME, prefTheme);
}
});